Equipment Failure Rates: Motor
E29-100 to MOTOR-1983-IND-MV
Equipment failure rates, MTBF, MTTR, and downtime statistics for electrical and mechanical plant equipment. Primary data from the USACE PREP reliability database (IEEE Std 3006.8-2018 Table 2), covering ~280 equipment classes. Supplemental data from IEEE motor and transformer surveys.
| equipment type | class code | description | failure rate per year (failures/year) | failures (count) | mdt hours (h) | mtbf hours (h) | mttm hours (h) | mttr hours (h) | standard | survey | unit years (unit-years) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Motor | E29-100 | Motor, electric, dc | 0.078605 | 119 | 0.97 | 111,443 | 0.42 | 67.6 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 1,513.9 |
| Motor | E29-210 | Motor, electric, induction, ≤ | 0.106386 | 340 | 53.01 | 82,342 | 14.55 | 21.5 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 3,195.9 |
| Motor | E29-220 | Motor, electric, induction, > | 0.025585 | 11 | 3.31 | 342,391 | 3.29 | 4.44 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 429.9 |
| Motor | E29-310A | Motor, electric, single phase, ≤ | 0.000027 | 0 | 0.49 | 435,895,106 | 0.49 | — | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 25,377.5 |
| Motor | E29-320 | Motor, electric, single phase, | 0.000687 | 1 | 0.72 | 12,746,688 | 0.71 | 3 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 1,455.1 |
| Motor | E29-410 | Motor, electric, synchronous, ≤ | 0.054442 | 94 | 6.37 | 160,905 | 1.77 | 7.34 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 1,726.6 |
| Motor | E29-420 | Motor, electric, synchronous, > | 0.008299 | 2 | 4.65 | 1,055,592 | 3 | 36 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 241 |
| Motor | MOTOR-1983-ALL | Motor all types all voltages (1983 survey) | 0.0708 | 360 | 16 | — | — | 69.3 | IEEE Std 3006.8-2018 | IEEE 1983 Motor Survey | 5,085 |
| Motor | MOTOR-1983-IND-LV | Motor induction 0-1000 V (1983 survey) | 0.0824 | 89 | 15 | — | — | 42.5 | IEEE Std 3006.8-2018 | IEEE 1983 Motor Survey | 1,080.3 |
| Motor | MOTOR-1983-IND-MV | Motor induction 1001-5000 V (1983 survey) | 0.0714 | 203 | 12 | — | — | 75.1 | IEEE Std 3006.8-2018 | IEEE 1983 Motor Survey | 2,844.4 |
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